Compound and method of increasing combustion of coal, &amp;c.



UNITED STATES PATENT OFFICE.

EDWARD C. LARKIN AND JOSEPH F. DUNCAN, 0F DAYTON, OHIO.

COMPOUND AND METHOD OF INCREASING COMBUSTION OF COAL, 8w.

No Drawing.

To all whom it may concern:

Be it known that we, EDWARD C. LARKIN and JOSEPH F. DUNCAN, citizens of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Compounds and Methods of Increasing Combustion of Coal, &c.; and we do declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to a new and useful composition of matter for use in furnaces and like places to prevent the carbon in coal manifesting itself in smoke resulting from combustion.

The composition of matter may be produced in either a solid form, for example, a powder, or it may partake of a liquid form. The latter We deem to be the most desirable because it can be administered more economically and efiiciently in such form.

The invention further consists in injecting heated compressed air for the purpose of thoroughly sprinkling the solution over the fire and for supplying additional atmospheric oxygen.

The object of the invention is to provide for a more thorough elimination of smoke by causing a more complete combustion of coal and the gases generated therefrom, and to reduce the destructive efiect of the sulfur and other gases on the metal surfaces of the furnace exposed to the action of the heat.

We are aware that various chemicals have been compounded for the purpose of increasing the combustion of coal and obviating the accumulation of smoke, many of which combined common salt with various other ingredients. It appears, however, that owing to the expensive character of these prior compounds and the high degree of intelligence required in their use as Well as other reasons, they have not met with success.

The liquid compound is made from the Specification of Letters Patent.

Application filed October 4, 1911.

Patented Feb. 20, 1912.

Serial No. 652,790.

following elements: common commercial salt, chemically named chlorid of sodium; alum, and charcoal, preferably produced from willow wood, and water. Charcoal from willow wood has been found most satisfactory in actual use owing to its being capable of being reduced to a finer powder, thereby serving as a better distributing agent or element in the composition.

In combining the above specified elements, the following proportions have been found to produce an agency which is highly effective in causing the consumption of the carbon contained in a given quantity of fuel.

Chlorid of sodium 2% lbs. Charcoal i: lb. Powdered alum 1 lb. Water 1 gallon.

A gallon of the chemical compound as thus prepared is sufiicient to treat a ton of coal, The solution is sprayed over the fire as the coal is fed into the furnace. The injection of the solution is accompanied by an injection of previously heated air to thoroughly spray the solution over the fire and to introduce additional oxygen. The combined effect of the solution and air is to instantaneously raise the temperature of the fire to a high degree, thereby burning all carbon and gases, and to preserve the metal of the furnace. After the solution has been sprayed for a time, say one or two minutes, the effect is apparent. It may then be stopped and the injection of the air alone continued.

Having set forth our invention and the manner of its use so that the best results may be obtained, we claim:

1. The herein described composition of matter, consisting of salt, alum, willow charcoal and water, combined in the proper proportions, substantially as described and for the purposes specified.

2. The herein described method of increasing the combustion of coal and consuming carbon therein, which consists in injecting a solution of salt, alum, charcoal and Water, and in applying heated compressed air as a medium for the distribution to continue.

of said solution over the fire at each charge In testimony whereof We affix our signaof coal, and adding additional atmospheric tures, in presence of two Witnesses.

oxygen to the fire. HY X r 3. The herein described method of in- E creasing the combustion of coal, which con- JOSEPH F. X DUNCAN.

mark

sists in spraying the coal with a solution of salt, alum, charcoal and Water, in injecting heated compressed air with said solution, and in stopping the injection of the solution and in permitting the injection of air Vitnesses R. J. MGCARTY, HOWARD S. SMrrI-r.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

